Brake



II. SCHMITZ.

BRAKE.

APPLICATION FILED FEB. 7. I9I9 Patented J une 22, 1920.

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PATENT GFFICE.

RICHARD SGHMTZ? F CHICAGO, ILLINOIS.

BRKE.

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Apgelicaton :ii/Ed February T, 1919.

lzlivntvd June 22,1920.

Serial No. 275,491.

iozi of 1i wiwoi boing shown in connection tlwrvwitil.

Fig'. ii :i View oi' tix@` oppositu aide of the derivi, from iinn shown in Fig. 1, iin, sspoiws; of the wlwri bring omi'ttd for Cimarnosa.

,':iimiiar roivrriirv nlxniemi,refer to Sim jini." partfi throughout the entire eiescrptimr As eziiown in iifdrawings, l is the hub of ihr viiiriri. vi'iairii is provided with ihn imm! iiririgvs .5 :1mi li, intermediate of vciiirii :uw mi mail :iw fpokw i. The brake drum i i, wloizrmi in iiv :erwin-.s anni Hanging liv mizzi of ooiia` ii :mii nuts T in thv ilsuui limiiiwr. Tim iaziiu: iiirilm i5 proriliofi with :i inirmiiy mii-miiufg iizmgfo H. imi) i) is Iiioiimwi on iio siervo 1U und ig proriduii with :m Liuiniriiijf rxivmiiilg; iiziiigv ii wiiii'li i5 pref'vrniiiy munir lire Humo iimiirirz s iiev miirziiii dimm-(or of this bruin: iirinai o, )my feifimiiiif :affirming momia uch :1h`

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iii.)

slots formed in the l'irst named plate, rollers :dearly indicated in the drawings, are wider ther the diameter of the stud bolts 19.

This results in a construction which permits an eccentric movement of the plate and the villers carried by the stud bolts 19, thus itting the frictional engaging surfaces ,o rompensate for any irregularities of the surf; e and will also compensate to ont tor irregularities caused le operation ot ihr device is as follows:

it will be apparent from the hereinbefore contained description that the movement of the lug El ot the plate 20 serves to rotate it, in this rotation @ferries with it, the stud its it?, which causes the rollers to engage hearing surface lo on the frictional devices li, and causes them to move outwardly and lo engage the inner surface of the flange of the brake drum 5, while the rev i' e movement serves to bring the rollers in voniact with the bearing surfaces 17 and retract the irietional devices so that they are rely out of contact with the flange 8 of Kdrum thereby leaving the Wheel un without any possibility of the rging thereon. i be apparent from the foregoing that ci ages may he made in the details 3 ol soustraction which will be Within the scope o my invention, but I do not desire in he limited thereto, except as such limit-.iiii appear in the hereinafter contained rianne he apparent from the forell aise i do not rely upon springs to the llange of the brake drum, but that i :e mechanically and positively moved t engagement therewith. igiving described my invention 'what l regard as new and desire to secure by Letg Patent is:

`he combination with a brake drum of dit); of trictif-fnal devices contained un, a insite, pivots carried by the plate lin li the fria-tion devices :1re oseillatable, le ineens engaging each friction de side o? its vpivot to cause said ia A o nuwe outwardly when is are lioiilg moved in one direc- :ril-art Ilmn when said means are saurai in the. opposite dirvi-tion, und i instable about the axis of the brake ving the rotatable means, and ier anchoring the plate stationary .ation lo the brake drum. wmiiuulinn with a brake drum phirulitv ol' l'rirtional devices dal? summum ou the said plate having A mail airfares adapted to eniho brake drum, there d :ww-ss in said t'rictional hh plate having stud bolts san-l hulls passing through rit-tional devices out of contact,

mounted upon said stud bolts which engage the sides or' said U-shaped recesses, a radially extending lug on said rotatable plate, an annular plate on the opposite side oF the devices having openings thereon through Which the said stud bolts pass, nuts mounted on said stud bolts to hold said plates in position, and means for anchoring` the plate stationary with relation to the brake drum.

3. The combination with a brake drum, of a hub, a plate, a plurality ol lrirtional devices pivotally mounted on the said plate having arcuate friction-al surfaces adapted to engage the flange of the brake drinn, there being a Ushaped recess in said Vrictiruial devices, a rotatable plate having stud bolts mounted therein, said bolts passing through slots formed in the first named plate, rollers mounted upon said stud bolts which en ga e the sides of said U-shaped recesses, a ra ially extending lug on said rotatable plate, an annular' plate on the opposite side of the devices having openings thereon through which the said stud bolts pass, nuts mounted on said stud bolts to hold said plate in position, and means for anchoring the plate stationary with relation to tho brake drum.

il. The combination with a brake drum of a plate, a plurality of frictional devices pivotally mounted on the said plate having arcuate frictional surfaces adapted to engage the flange of' the brake drum, there being a U-shaped recess in said frictional devices, a rotatable plate having stud bolts mounted therein, said bolts passing through slots formed in the first named plate, rollers mounted upon said stud bolts which engage the sides of said U-shaped recesses, a radially extending lug on said rotatable plate, an annular plate on the opposite side of the devices having openings thereon through which the said stud bolts pass, the inner edge of said annular plate being in spaced relation to the hub, nuts mounted on said stud bolts to hold said plates in position, and means for anchoring the plate station ary with relation to the brake drum.

5. The combination with a wheel, of a brake drum secured thereto, a hub, a plate, a plurality of frictional devices pivotally mounted on the said plate having arcuate frictional surfaces adapted to engage the lil-.inge olf the brake drum, there being a U- shaped recess in said trictional devices, a rotatable plate having stud bolts mounted therein, said bolts passing through slots formed in the named plate, rollers mounted. upon said sind bolts which engage the sides of said lishaped recesses, a radially extending lng.: on said rotnta le philoi an annular plate on the opposite side of riudevices havingA openings tinurnn'iA tlm'L d e fsaid annular plate 4bein in spaced re ation to the hub, nuts moun d on said stud bolts to hold said plates in position, and means for anchorin the plate stationary with relation to the rake drum.

6. The combination with a wheel, of a brake drum secured thereto, a hub, said hub being fixed against rotation, a plate, a plurality of frictional devices pivotally mounted on the said late having arcuate frietional surfaces a apted to engage the flange of the brake drum2 there being a U-shaped recess in said frictional devices, a rotatable plate having stud bolts mounted therein, said bolts passing through slots formed in the first named plate, rollers mounted upon said stud bolts which engage the sides ofl said U-sha ed recesses, a ra xally extending lug on sai rotatable plate, an annular plate on the opposite side of the devices havin openings thereon through which the said stud bolts pass, the inner edge of said annular plate being in spaced relation to the hub, nuts mounted on said stud bolts to hold said plates in position, and means for anchorin the late stat1onary with relation to the rake rum.

In testimony whereof I have signed the foregoing speoilication.`

RICHARD SCHMITZ. 

